Union, PA climate
Union has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 86°, a January night drops to 22°, and about 26 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Union feels like
Winter
Spring
Summer
Fall
Union weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 39° | 22° | 3.3" | 4.7" | 10 | 22° – 38° |
| February | 42° | 23° | 2.8" | 12.4" | 10 | 21° – 40° |
| March | 50° | 30° | 4.0" | 3.3" | 9 | 34° – 49° |
| April | 63° | 40° | 3.7" | 0.3" | 10 | 47° – 57° |
| May | 73° | 50° | 3.8" | 0 | 12 | 57° – 67° |
| June | 81° | 59° | 4.4" | 0 | 11 | 67° – 74° |
| July | 86° | 64° | 4.8" | 0 | 10 | 71° – 79° |
| August | 84° | 62° | 4.5" | 0 | 10 | 69° – 77° |
| September | 77° | 55° | 4.9" | 0 | 8 | 63° – 70° |
| October | 65° | 43° | 4.2" | 0.5" | 10 | 50° – 61° |
| November | 54° | 34° | 3.3" | 1.2" | 8 | 38° – 48° |
| December | 44° | 27° | 4.0" | 3.9" | 11 | 27° – 47° |
| Year | 63° | 43° | 47.7" | 26.3" | 119 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Union
Union gets 48 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 119 days a year.
About 193 frost-free days a year
In half of years the last 32° night comes by April 16 and the first one by October 27. That leaves about 193 frost-free days for gardens, longer than 67% of U.S. towns.
Heating and cooling a home in Union
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Union, 87% of that work is heating and 13% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Union and its neighbors
Union borders 5 towns with climate data. January nights across them vary by 0.3°. Robeson has the coldest January nights (22°) and Amity the hottest July afternoons (88°). Union’s January low is 22° and its July high 86°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.